YearToAvoid

2018 Audi A5 Cabriolet Problems, Recalls & Reliability

Verdict

No verdict

Complaint Index

9/100

#11 most-complained of 12 A5 Cabriolet years

The 2018 Audi A5 Cabriolet has a complaint index of 9, the lowest among all 12 model years with data, and ranks 11th worst (meaning it's among the best years). It has 0 complaints on file and 1 recall for an airbag harness issue.

Complaints
0
Recalls
1
Crashes / fires
0 / 0
Injuries / deaths
0 / 0
NHTSA overall rating
Not rated
EPA combined MPG
27
24 city / 34 hwy

Top 2018 Audi A5 Cabriolet problems

NHTSA owner complaints by component group. Groups with 15+ complaints have their own page.

No component data.

2018 Audi A5 Cabriolet recalls

1 NHTSA recall campaign list this model year.

  1. NHTSA 19V547000Jul 24, 2019Airbags145,337 vehicles

    Air bags:frontal:passenger side:inflator module

    Volkswagen Group of America, Inc. (Audi) is recalling certain 2018-2019 Audi RS5 Sportback, 2018 S5 Cabriolet, S5 Sportback, S5 Coupe, S4 Sedan, A5 Cabriolet, A5 Sportback, A5 Coupe, and 2017-2018 A4 Sedan and A4 Allroad vehicles. Oxidation on the Passenger Occupant Detection System (PODS) connecting cable may cause the software to misdiagnose a malfunction and disable the passenger air bag.

    Risk: A disabled passenger air bag increases the risk of injury in the event of a crash.

    Remedy: Audi will notify owners, and dealers will install cable ties to the harness, free of charge. The recall began September 9, 2019. Owners may contact Volkswagen customer service at 1-800-893-5298. Audi's number for this recall is 74D9.

2018 Audi A5 Cabriolet fuel economy and fuel cost

City
24 MPG
Highway
34 MPG
Combined
27 MPG
Annual fuel cost (EPA)
$2,950
15,000 mi/yr
Fuel
Premium
Current regular gas
$4.32/gal
national avg.

EPA figures; median across configurations of this model year. Estimate your own cost with the fuel cost calculator.

2018 compared with other A5 Cabriolet years

Complaint Index by model year (0 = fewest issues, 100 = most)0255075100201020112012201320142015201620172018202020212022
Complaint Index: 0 = fewest issues, 100 = most, relative to other years of this model. Avoid Caution Good Best
YearVerdictIndexComplaintsRecallsMPG
2016No verdict00124
2017No verdict642224
2018No verdict90127
2020No verdict180126
2021No verdict270326

All Audi A5 Cabriolet years: best and worst →

Frequently asked questions

Is the 2018 Audi A5 Cabriolet reliable?
Based on NHTSA owner complaints and recalls, the 2018 A5 Cabriolet has a complaint index of 9, the lowest of any A5 Cabriolet model year with data, and zero complaints on file.
What problems does the 2018 Audi A5 Cabriolet have?
NHTSA lists no owner complaints for the 2018 A5 Cabriolet. It has one recall covering an airbag wiring harness that required dealers to install cable ties.
Does the 2018 Audi A5 Cabriolet have a recall?
Yes. Recall 19V547000 covers the airbags on the 2018 A5 Cabriolet and related Audi models; dealers install cable ties to the harness free of charge. It is not a do-not-drive recall.
What year Audi A5 Cabriolet should I avoid?
Based on NHTSA data, the 2010, 2011, and 2012 model years carry Avoid verdicts, with complaint indexes of 100, 82, and 91. The 2018 model year, with an index of 9, ranks among the best.
What is the fuel economy of the 2018 Audi A5 Cabriolet?
EPA rates the 2018 A5 Cabriolet at 27 mpg combined (24 city / 34 highway), with an estimated annual fuel cost of $2,950.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.